YeeShin504 · YeeShin504 · Apr 19, 2026 · Feb 26, 2026 · Apr 19, 2026 · Apr 19, 2026
diff --git a/README.md b/README.md
@@ -108,6 +108,12 @@ To use the offline documentation:
 2. Extract the ZIP to a folder
 3. Open `index.html` in your browser
 
+A quick reference guide is also available as a function in the library:
+```python
+from ma1522 import sympy_commands
+sympy_commands()
+```
+
 #### Building from Source
 
 If the offline ZIP is not available in the releases, you can build it yourself:

diff --git a/docs/tutorials/tut01.ipynb b/docs/tutorials/tut01.ipynb
diff --git a/docs/tutorials/tut03.ipynb b/docs/tutorials/tut03.ipynb
@@ -1528,140 +1528,6 @@
     "# Therefore, det has only been scaled by a factor of 1 + x**3"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 23,
-   "id": "b8678a5d",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Modified matrix for column 1:\n"
-     ]
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\left[\\begin{array}{ccc}1 & 5 & 3\\\\2 & 2 & -2\\\\0 & 1 & 3\\end{array}\\right]$"
-      ],
-      "text/plain": [
-       "Matrix([\n",
-       "[1, 5,  3]\n",
-       "[2, 2, -2]\n",
-       "[0, 1,  3]\n",
-       "])"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\text{Determinant for column }1: -2$"
-      ],
-      "text/plain": [
-       "<IPython.core.display.Math object>"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    },
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Modified matrix for column 2:\n"
-     ]
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\left[\\begin{array}{ccc}1 & 1 & 3\\\\0 & 2 & -2\\\\0 & 0 & 3\\end{array}\\right]$"
-      ],
-      "text/plain": [
-       "Matrix([\n",
-       "[1, 1,  3]\n",
-       "[0, 2, -2]\n",
-       "[0, 0,  3]\n",
-       "])"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\text{Determinant for column }2: \\frac{3}{4}$"
-      ],
-      "text/plain": [
-       "<IPython.core.display.Math object>"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    },
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Modified matrix for column 3:\n"
-     ]
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\left[\\begin{array}{ccc}1 & 5 & 1\\\\0 & 2 & 2\\\\0 & 1 & 0\\end{array}\\right]$"
-      ],
-      "text/plain": [
-       "Matrix([\n",
-       "[1, 5, 1]\n",
-       "[0, 2, 2]\n",
-       "[0, 1, 0]\n",
-       "])"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\text{Determinant for column }3: - \\frac{1}{4}$"
-      ],
-      "text/plain": [
-       "<IPython.core.display.Math object>"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    },
-    {
-     "data": {
-      "text/latex": [
-       "$\\displaystyle \\left[\\begin{array}{c}-2\\\\\\frac{3}{4}\\\\- \\frac{1}{4}\\end{array}\\right]$"
-      ],
-      "text/plain": [
-       "Matrix([\n",
-       "[  -2]\n",
-       "[ 3/4]\n",
-       "[-1/4]\n",
-       "])"
-      ]
-     },
-     "execution_count": 23,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "Matrix.from_str(\"1 5 3; 0 2 -2; 0 1 3\").cramer_solve(Matrix.from_str(\"1; 2; 0\"))\n",
-    "\n"
-   ]
-  },
   {
    "cell_type": "markdown",
    "id": "344bf798",

diff --git a/docs/tutorials/tut07.ipynb b/docs/tutorials/tut07.ipynb
@@ -111,7 +111,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "db1d293b",
    "metadata": {},
    "outputs": [
@@ -135,7 +135,7 @@
     }
    ],
    "source": [
-    "sol = mat.solve(aug)\n",
+    "sol = mat.solve(aug)[0]\n",
     "sol"
    ]
   },

diff --git a/mkdocs.yml b/mkdocs.yml
@@ -4,7 +4,7 @@ site_author: Yee Shin Teng
 site_url: https://yeeshin504.github.io/linear-algebra/
 repo_url: https://github.com/YeeShin504/linear-algebra
 repo_name: YeeShin504/linear-algebra
-watch: [mkdocs.yml, README.md]
+watch: [ mkdocs.yml, README.md ]
 copyright: Copyright &copy; 2025 Yee Shin Teng
 
 nav:
@@ -77,7 +77,7 @@ plugins:
   - mkdocs-jupyter:
       ignore_h1_titles: True
       # live notebooks to be processed using jupyterlite plugin
-      ignore: ["live/*.ipynb"]
+      ignore: [ "live/*.ipynb" ]
       execute: true
   - jupyterlite:
       notebook_patterns:
@@ -90,7 +90,7 @@ plugins:
       default_handler: python_xref
       handlers:
         python_xref:
-          paths: [src]
+          paths: [ src ]
           inventories:
             - https://docs.python.org/3/objects.inv
             - https://docs.sympy.org/latest/objects.inv
@@ -142,8 +142,9 @@ markdown_extensions:
       custom_fences:
         - name: mermaid
           class: mermaid
-          format: !!python/name:pymdownx.superfences.fence_code_format
+          format:
 
+            !!python/name:pymdownx.superfences.fence_code_format 
   - toc:
       permalink: true
 

diff --git a/pyproject.toml b/pyproject.toml
@@ -36,6 +36,7 @@ dev = [
     "build>=1.2.2.post1",
     "twine>=6.2.0",
     "pytest-cov>=7.0.0",
+    "ma1522-linear-algebra",
 ]
 
 docs = [
@@ -52,6 +53,14 @@ docs = [
 [tool.uv]
 default-groups = ["dev", "docs"]
 
+[tool.uv.workspace]
+members = [
+    ".",
+]
+
+[tool.uv.sources]
+ma1522-linear-algebra = { workspace = true, editable = true }
+
 [tool.setuptools]
 license-files = []
 

diff --git a/src/ma1522/__init__.py b/src/ma1522/__init__.py
@@ -1,4 +1,4 @@
-from .utils import display
+from .utils import display, sympy_commands
 
 from .custom_types import (
     Shape,
@@ -30,4 +30,5 @@
     "SVD",
     "NumSVD",
     "Matrix",
+    "sympy_commands",
 ]
diff --git a/src/ma1522/custom_types.py b/src/ma1522/custom_types.py
@@ -5,10 +5,10 @@
 from typing import TYPE_CHECKING, NamedTuple
 
 import sympy as sym
+from sympy.matrices.exceptions import NonInvertibleMatrixError
 from sympy.printing.latex import LatexPrinter
 
 from .utils import _gen_latex_repr, _textify
-# from ma1522 import utils
 
 if TYPE_CHECKING:
     from typing import Literal
@@ -407,10 +407,14 @@ class PDP(Printable):
     def _latex(self, printer=None) -> str:
         try:
             P_inv = self.P.inv()  # inv exists and is unique
+            # Normalize inverse to Matrix subclass so custom latex uses array formatting.
+            P_inv_fmt = self.P.__class__(P_inv, aug_pos=set())
             return (
-                self.P._latex(printer) + self.D._latex(printer) + P_inv._latex(printer)
-            )  # type: ignore
-        except Exception:
+                self.P._latex(printer)
+                + self.D._latex(printer)
+                + P_inv_fmt._latex(printer)
+            )
+        except NonInvertibleMatrixError:
             return (
                 self.P._latex(printer)
                 + self.D._latex(printer)